(Each resembled a lentil, or lens in Latin ... a better refractor The spyglass-turned-telescope had limitations, some of which Galileo was able to design around. To reduce distortions such ...

The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting ...

Galileo made a telescope by simply combining a convex lens and a concave lens, which is commonly called a Galilean telescope ... and increase image sharpness in comparison with Galilean telescopes.

The investigation of light and optical properties stretches back centuries, at least to the ancient Greeks, Egyptians, and Mesopotamians. In fact, even artificial lenses date back to as early as ...